Tire-vulcanizing mold



May' '24 1927 P. DE MATTIA TIRE VULCANIZING MOLD Filed sept. a. 192s "lilllll All INVENTOR 'ZereMZZi/w WITNESSES ATroRNEYs Patented May 24, 1927.

lUNITED STATESPATENT OFFICE.

PETER DE MATTIA, E Passaic, NEW JERSEY, AssIGNoR To DE MATTIAEROTHERS, INC., 01.1' GARFIELD, NEW JERSEY,v A coRPoRATroN oF NEW JERSEY.

. TIRE-VULCANIZING MOLD.

Application led September 8, 1926. Serial No. 134,279.

The presentinvention relates to tire vulcanizing rnoldsfaridmoreA particularly to socalled steam ljacketed molds in which the mold members are provided with steam chambers into which steam is admitted. for c the purpose of applying the heat-necessary 'tothe vulcanization of the rubber embodied fin the tire.

Such molds ,are usually composed of two annular membersieach of which is provided with steam chambers provided with notonly means toadmit steam thereto but also means to permit the escape of .water resulting from 1 condensation of thesteam. It is desirable lin some cases that these mold members be used in a vertical position, and it has been oun'd in practice that where the steam chambers extend entirely about the` mold members there is some diieulty in removing therefrom the water which gathers therein as the. result of condensation of the steam, and that the water flowing downward will gather and back up at the bottom of the chambers in suilicient volume to interfere to' a considerable degree withv the .proper operation of the molds. l

The object of the present invention thereforeis to provide molds of such construc- .tion as to prevent the gathering and backing up at'the bottom of the chanibers'and whereby the water will be promptly drained off and ejected from the mold members.

ToA accomplish this result I have provided when the moldsare in a vertical position,`

thus forming the steam chambeis into sections, producing what might be termed the main steam chambers and also auxiliary steam chambers, and by providing means for drainin both vof the chambers of water, all as will he hereinafter set forth. The invention therefore may be said to consist of a vulcanizing mold, the members of which are provided with separate and independent main steam chambers and auxiliary steam chambers with means for independently draining-each of saidchambers.

The present invention is shown in the accompanying drawing in which Fig. 1 shows in front elevation, partially broken awa to show underlying construction, a mol in machine provided with my improved mol tire molding or s chambers 5 and 6 in each of the mold thedii'ection of the arrow in that figure.

Fig. 3is a view somewhat enlarged as compared with `the other views showing in section the auxiliary steam chambers and parts ofthe main steam chambers, together with the means for draining them and for admitting steam into the auxiliary steam chambers. .i

Fig. 4 is a sectional View taken on the line 4-4 in Fig. 1 looking in the direction of the arrow iny that figure.

Similar reference'characters will be einployed throughout the specification and drawings to designate corresponding parts.`

As shown in the drawing the device comrises two annular mold members 1 and 2.

`achof these mold members is preferably made of a single casting circular or annular in form and provided with a complementary mating joint 3at or near their outer peripheries and engaging bead rin s 31 on their inner peripheries. Eachwmod member is provided upon its inner face with a aping surface 4, and as indicated ii'i Fig. 1 are mounted for use in a lvertical position, one of, them being tixedly mounted and. theother mounted to have movement toward and froml the fixed member so as'to open and close the mold. Some of the supporting and operating` mechanism of the apparatus is shown in F ig. 1 but as such. mechanism constitutes no part of the present invention it will not be neces# sary to describe the same herein.

The mold members 1 and 2 are of the socalled steam jacketed type in which steam chambers are-formed between the inner and outer walls. As illustrated there are two substantially concentric circular steam members, one bein located near the outer periphery and t e other near the 4.inner riphery of the mold members. These steam chambers 5 and 6 are'divided by partitions 7 and 8 preferably located near the bottom of the mold thus dividing` the chambers into an u per or main section running from one partition 7 4about the upper part of the mold to the partition 8 on the o posite side, and relatively smaller sections tween the portions. The two sections thus formed in each steam chamber ma be defined as the main chambers, e upper pa1ji 'and being auxiliary chambers, being the relatively small segmental part at the lower part eX- tending between the partitions 7 and 8.

Byl means of piping 9 steam is admitted to t e steam chambers, there being independent steam inlets 9 as indicated in Fig. 1 for both the main steam chambers and the auxiliary steam chambers. y The water which athers in the chambers l0 by condensation og the steam will flow .f downward about and within the main chambers to a point adjacent the artitions 7 and 8 at which point it will rain therefrom through the piping 10 and the cou- Al5 plings l1. The water which gathers in the auxiliary chambers will How therefrom through the couplingslQ, also connected to the piping 10.

It will be noted that the couplings 11 and 12 enter the steam chambers at the lowest points to which the condensed water may flow by gravity and, thus will be effective in permitting all water to escape from the steam chambers, and that the partitions 7 and 8 will prevent the water from the main chambers entering the auxiliary chambers.

The mold members preferably are provided with an air chamber 13 intermediate the concentric steam chambers and open as by the openings 14 to admit air thereto.

Having described my invention, I claim 1. In a steam jacketed mold for vulcanizing rubber tires, a plurality of concentric, circular steam chambers, partitions dividing each of such chambers into independent sections and independent steam inlets and independent drainage outlets for each section.

2. In a steam jacketed tire vulcanizing mold two vertically disposed substantially circular mold members, a plurality of concentric, circular steam chambers in each mold member, partitions dividing each of such chambers into independent sections, such partitions located below a horizontal line passing diametrically through the mold members. independent steam inlets for each section and independent steam outlets for each section positioned at the lowermost points in each section.

PETER DE MATTIA. 

